CN102967400A - Wind turbine generator power characteristic testing method under complex terrain - Google Patents
Wind turbine generator power characteristic testing method under complex terrain Download PDFInfo
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Abstract
The invention discloses a wind turbine generator power characteristic testing method under a complex terrain. The wind turbine generator power characteristic testing method comprises the following steps of: step 1, selecting one wind turbine generator A with the same type as a wind turbine generator B to be detected, wherein a surrounding field of the wind turbine generator A can pass through field assessment conditions in the IEC (International Electro-technical Commission)-61400-12-1; step 2, synchronously recording a wind speed Vfront in front of a wind wheel of the wind turbine generator A and a wind speed Vback behind the wind wheel of the wind turbine generator A for multiple times; step 3, carrying out linear fitting on the Vfront and the Vback, and recording as a formula Vfront=aVback+b; step 4, synchronously recording a wind speed Vback behind a wind wheel of the wind turbine generator B and an outlet pure power P for multiple times; step 5. calculating the wind speed Vfront in front of the wind wheel of the wind turbine generator B by utilizing that Vfront=aVback+b and the Vback in the step 4; and step 6, calculating a power characteristic of the wind turbine generator B by using the outlet pure power P of the wind turbine generator B and the Vfront. The testing method provided by the invention can be applied under condition the condition that the field assessment is unqualified, and the testing cost is low.
Description
Technical field
The present invention relates to wind-powered electricity generation unit type approval field, particularly, relate to the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain.
Background technology
IEC standard: IEC61400-12-1:2005 " test of wind power generating set power characteristic " specified in more detail the way that separate unit wind-powered electricity generation unit is carried out power characteristic test, be used for the generating capacity of test wind-powered electricity generation unit.The method is applicable to the grid connected wind power unit of all types and capacity.This unified method can guarantee the test of wind-powered electricity generation unit power characteristic and consistance, accuracy and the repeatability analyzed.The wind-powered electricity generation unit is carried out power characteristic test, and the new or good unit of maintenance that can confirm that wind-powered electricity generation unit operator buys satisfies the technical conditions of the power characteristic that wind-powered electricity generation unit manufacturer states.The power characteristic of fair, clear and definite, objective appraisal wind-powered electricity generation unit.
IEC standard: IEC61400-12-1:2005 " test of wind power generating set power characteristic " specified in more detail the condition in place around the blower fan to be measured, the place appraisal procedure is very strict, few wind field can reach requirement.If can't pass the place assessment, to carry out this test and must at first carry out the place demarcation, the place is demarcated needs very high cost.
Summary of the invention
The object of the present invention is to provide the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain, can test assessing in the underproof situation in the place, and testing cost is low.
To achieve these goals, the present invention is by the following technical solutions:
Wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain comprises:
Step 1: confirm the model of wind-powered electricity generation B of Unit to be measured, select the wind-powered electricity generation unit A of and wind-powered electricity generation B of Unit same model to be measured, and the place can be by the place evaluation condition among the IEC-61400-12-1 around the described wind-powered electricity generation unit A.
Step 2: the wind speed V before the synchronous recording wind-powered electricity generation unit A wind wheel repeatedly
BeforeWith the wind speed V behind the wind wheel
After
Step 3: be V
BeforeAnd V
AfterLinear Quasi box-like, be designated as V
Before=aV
After+ b, a wherein, b is constant, by V
BeforeAnd V
AfterDetermine.
Step 4: the wind speed V behind the wind wheel of synchronous recording wind-powered electricity generation B of Unit repeatedly
AfterWith wind-powered electricity generation B of Unit outlet net power P.
Step 5: utilize the box-like V of Linear Quasi that determines in the step 3
Before=aV
AfterV in+b and the step 4
AfterCalculate the front wind speed V of wind-powered electricity generation B of Unit wind wheel
Before
Step 6: use wind-powered electricity generation B of Unit outlet net power P and the front wind speed V of wind-powered electricity generation B of Unit wind wheel
BeforeAnd calculate the power characteristic of wind-powered electricity generation B of Unit in conjunction with the algorithm of IEC61400-12-1 regulation.
Further, the wind speed V before the wind wheel described in step 2 and the step 4
BeforeWith the V behind the wind wheel
AfterBe the n minute mean value wind speed of converting under the standard air density.
Further, in described step 2 and the step 4, by the wind speed V before the wind wheel of wind gage acquisition wind-powered electricity generation unit A
Front n minute mean value, again with its conversion under standard air density, the supervisory system by the wind-powered electricity generation unit obtains the wind speed V behind the wind wheel of wind-powered electricity generation unit A, B
Rear n minute mean value, again it is converted under standard air density; And by the wind speed V before the wind-powered electricity generation unit A wind wheel of wind gage acquisition
Front n minute mean valueWith the wind speed V behind the wind wheel that obtains by the wind-powered electricity generation B of Unit
Rear n minute mean value, all must contain wind-powered electricity generation unit incision wind speed to all wind speed of cut-out wind speed segment, the mode that specifically contains is: the incision wind speed is done the bin interval as starting point with the 0.5m/s interval, is no less than 5 n minute mean value wind speed in each bin interval; Accordingly, in described step 3 and the step 5, there is a box-like V of different Linear Quasis in the wind speed interval of each 0.5m/s
Before=aV
After+ b, all independent box-like V of Linear Quasi that calculates
Before=aV
After+ b.
Further, in step 2, the wind speed V before the wind wheel of described wind-powered electricity generation unit A
BeforePreparation method is: erect meteorological mast apart from A2.5 times of rotor diameter place of wind-powered electricity generation unit on the prevailing wind direction of wind-powered electricity generation unit A, described wind gage is arranged on the meteorological mast, and also be provided with air-temperature sensor, baroceptor on the described meteorological mast, setting height(from bottom) is hub height, and the data that wind gage records are V
Front n minute Mean valueThe use air-temperature sensor records temperature record T and baroceptor records barometric information B, calculates atmospheric density ρ in conjunction with gas law constant R again
N minute mean value:
According to the wind speed convert formula under the different atmospheric density, the V that wind gage is recorded
Front n minute mean valueData are converted under the standard air density, and convert formula is:
Wind speed V behind the wind wheel of wind-powered electricity generation unit A, B that the supervisory system of passing through the wind-powered electricity generation unit in described step 2 and the step 4 obtains
Rear n minute mean value, also be converted to wind speed under the standard air density by above-mentioned translation method.
Further, described n gets 10.
Further, all adopt a second level synchronous recording in described step 2 and the step 4.
Further, the determining based on least square method of coefficient a and b in the described step 3 neutral line match formula.
Further, the method for acquisition wind-powered electricity generation B of Unit outlet net power P is in the case low pressure side of wind-powered electricity generation B of Unit current transformer and voltage transformer (VT) to be installed in the described step 4.
Method of testing of the present invention can be assessed in the underproof situation in the place and use, and demarcates this link by removing the place, can save time and cost, can finish economical, accurately test.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the wind-powered electricity generation unit power characteristic method of testing process flow diagram under the complex-terrain of the present invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
In conjunction with shown in Figure 1, the wind power generating set power characteristic method of testing under a kind of complex-terrain of the present invention comprises:
Step 1: confirm the model of wind-powered electricity generation B of Unit to be measured, select the wind-powered electricity generation unit A of and wind-powered electricity generation B of Unit same model to be measured, the place can be by the place evaluation condition among the IEC-61400-12-1 around the wind-powered electricity generation unit A.
Step 1.1: determine the model of wind-powered electricity generation B of Unit to be measured, then select same model wind-powered electricity generation unit A, the wind wheel of A and B has crash consistency, to guarantee the V after same wind speed passes through the A wind wheel
AfterWith the V behind the process B wind wheel
AfterIdentical.
Step 1.2: the place can be by the assessment of the place among the IEC61400-12-1 around guaranteeing wind-powered electricity generation unit A.
Step 2: the wind speed V before the synchronous recording wind-powered electricity generation unit A wind wheel repeatedly
BeforeWith the wind speed V behind the wind wheel
After, the wind speed V before the wind wheel
BeforeWith the V behind the wind wheel
AfterBe 10 minutes mean value wind speed converting under the standard air density.On the prevailing wind direction of wind-powered electricity generation unit A, erect meteorological mast apart from A2.5 times of rotor diameter place of wind-powered electricity generation unit.Wind gage, air-temperature sensor, baroceptor are arranged on the meteorological mast, and setting height(from bottom) is hub height.By the wind speed V before the wind wheel of wind gage acquisition wind-powered electricity generation unit A
Front 10min is flat Average, again with its conversion under standard air density, the supervisory system by the wind-powered electricity generation unit obtains the wind speed V behind the wind wheel of wind-powered electricity generation unit A
Rear 10min mean value, again it is converted under standard air density.
The record of the wind speed 10min average data in wind gage and the wind-powered electricity generation unit A supervisory system should be accomplished second level synchronously.And can within the time, carry out record, can record a series of wind speed 10min average datas.
The 10min average data of wind gage should be contained wind-powered electricity generation unit A incision wind speed all wind speed to the cut-out wind speed interval.The mode that specifically contains is: the incision wind speed is done the bin interval as starting point with the 0.5m/s interval, is no less than 5 10min mean value numerical value in each bin interval.
Step 2.1: use the gps satellite time dissemination system to guarantee that wind speed level second in wind gage and the wind-powered electricity generation unit A supervisory system is synchronous.
Step 2.2: the use air-temperature sensor records temperature record T and baroceptor records barometric information B, calculates atmospheric density ρ in conjunction with gas law constant R again
10min mean value:
Step 2.3: according to the wind speed convert formula under the different atmospheric density, will record wind speed 10min average data and convert standard air density (1.225kg/m
3) under, convert formula is:
Step 3: calculate V
BeforeAnd V
AfterLinear Quasi box-like, be designated as V
Before=aV
After+ b, a wherein, b is constant, by V
BeforeAnd V
AfterDetermine.
The box-like middle constant a of Linear Quasi and b are determined by least square method.
Step 4: the wind speed V behind the wind wheel in the supervisory system of synchronous recording wind-powered electricity generation B of Unit repeatedly
AfterWith wind-powered electricity generation B of Unit outlet net power P.
Wind-powered electricity generation B of Unit outlet net power P log resolution is 1s, and the data of record are the 10min average data.
Wind speed 10min average data V behind the wind wheel in the supervisory system of wind-powered electricity generation B of Unit
AfterShould contain wind-powered electricity generation B of Unit incision wind speed all wind speed to the cut-out wind speed interval.The mode that specifically contains is: the incision wind speed is done the bin interval as starting point with the 0.5m/s interval, is no less than 5 wind speed 10min mean value numerical value in each bin interval.
Wind speed 10min average data in the supervisory system of wind-powered electricity generation B of Unit should by formula be converted under the standard air density.
Step 5: utilize the box-like V of Linear Quasi that determines in the step 3
Before=aV
AfterV in+b and the step 4
AfterCalculate the front wind speed V of wind-powered electricity generation B of Unit wind wheel
Before(apart from the wind speed of B2.5 times of rotor diameter place of wind-powered electricity generation unit hub height).
Step 6: use the front wind speed V of wind-powered electricity generation B of Unit wind wheel in wind-powered electricity generation B of Unit outlet net power P and the step 5
BeforeAnd calculate the power characteristic of wind-powered electricity generation B of Unit in conjunction with the algorithm of IEC61400-12-1 regulation.
In the power characteristic test process of wind-powered electricity generation unit, the landform distortion causes flow distortion to cause that test result produces larger error, can not reflect the real generating capacity of wind-powered electricity generation unit, so the IEC61400-12-1 regulation for the test of the wind-powered electricity generation unit power characteristic under the complex-terrain, should at first be carried out the place and demarcate.The place is demarcated will produce more expense.The present invention avoids the process that the place is demarcated, and proposes a kind of based on the wind-powered electricity generation unit power characteristic method of testing under the complex-terrain of wind speed linear fit method.Can be economical, finish accurately test.
The above only be the better embodiment of the present invention, but protection scope of the present invention is not limited to this.Anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (8)
1. the wind-powered electricity generation unit power characteristic method of testing under the complex-terrain is characterized in that, comprising:
Step 1: confirm the model of wind-powered electricity generation B of Unit to be measured, select the wind-powered electricity generation unit A of and wind-powered electricity generation B of Unit same model to be measured, and the place can be by the place evaluation condition among the IEC-61400-12-1 around the described wind-powered electricity generation unit A;
Step 2: the wind speed V before the synchronous recording wind-powered electricity generation unit A wind wheel repeatedly
BeforeWith the wind speed V behind the wind wheel
After
Step 3: be V
BeforeAnd V
AfterLinear Quasi box-like, be designated as V
Before=aV
After+ b, a wherein, b is constant, by V
BeforeAnd V
AfterDetermine;
Step 4: the wind speed V behind the wind wheel of synchronous recording wind-powered electricity generation B of Unit repeatedly
AfterWith wind-powered electricity generation B of Unit outlet net power P;
Step 5: utilize the box-like V of Linear Quasi that determines in the step 3
Before=aV
AfterV in+b and the step 4
AfterCalculate the front wind speed V of wind-powered electricity generation B of Unit wind wheel
Before
Step 6: use wind-powered electricity generation B of Unit outlet net power P and the front wind speed V of wind-powered electricity generation B of Unit wind wheel
BeforeAnd calculate the power characteristic of wind-powered electricity generation B of Unit in conjunction with the algorithm of IEC61400-12-1 regulation.
2. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 1 is characterized in that, the wind speed V before the wind wheel described in step 2 and the step 4
BeforeWith the V behind the wind wheel
AfterBe the n minute mean value wind speed of converting under the standard air density.
3. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 2 is characterized in that, in described step 2 and the step 4, by the wind speed V before the wind wheel of wind gage acquisition wind-powered electricity generation unit A
Front n minute mean value, again with its conversion under standard air density, the supervisory system by the wind-powered electricity generation unit obtains the wind speed V behind the wind wheel of wind-powered electricity generation unit A, B
Rear n minute mean value, again it is converted under standard air density; And by the wind speed V before the wind-powered electricity generation unit A wind wheel of wind gage acquisition
Front n minute mean valueWith the wind speed V behind the wind wheel that obtains by the wind-powered electricity generation B of Unit
Rear n minute mean value, all must contain wind-powered electricity generation unit incision wind speed to all wind speed of cut-out wind speed segment, the mode that specifically contains is: the incision wind speed is done the bin interval as starting point with the 0.5m/s interval, is no less than 5 n minute mean value wind speed in each bin interval;
Accordingly, in described step 3 and the step 5, there is a box-like V of different Linear Quasis in the wind speed interval of each 0.5m/s
Before=aV
After+ b, all independent box-like V of Linear Quasi that calculates
Before=aV
After+ b.
4. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 3 is characterized in that, in step 2, and the wind speed V before the wind wheel of described wind-powered electricity generation unit A
BeforePreparation method is: erect meteorological mast apart from A2.5 times of rotor diameter place of wind-powered electricity generation unit on the prevailing wind direction of wind-powered electricity generation unit A, described wind gage is arranged on the meteorological mast, and also be provided with air-temperature sensor, baroceptor on the described meteorological mast, setting height(from bottom) is hub height, and the data that wind gage records are V
Front n minute mean valueThe use air-temperature sensor records temperature record T and baroceptor records barometric information B, calculates atmospheric density ρ in conjunction with gas law constant R again
N minute mean value
According to the wind speed convert formula under the different atmospheric density, the V that wind gage is recorded
Front n minute mean valueData are converted under the standard air density, and convert formula is:
Wind speed V behind the wind wheel of wind-powered electricity generation unit A, B that the supervisory system of passing through the wind-powered electricity generation unit in described step 2 and the step 4 obtains
Rear n minute mean value, also be converted to wind speed under the standard air density by above-mentioned translation method.
5. according to claim 2, the wind-powered electricity generation unit power characteristic method of testing under 3 or 4 described a kind of complex-terrains, it is characterized in that described n gets 10.
6. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 1 is characterized in that, all adopts a second level synchronous recording in described step 2 and the step 4.
7. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 1 is characterized in that, coefficient a and b's determines based on least square method in the described step 3 neutral line match formula.
8. the wind-powered electricity generation unit power characteristic method of testing under a kind of complex-terrain according to claim 1, it is characterized in that the method that obtains wind-powered electricity generation B of Unit outlet net power P in the described step 4 is in the case low pressure side of wind-powered electricity generation B of Unit current transformer and voltage transformer (VT) to be installed.
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Cited By (4)
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| CN104747367A (en) * | 2013-12-31 | 2015-07-01 | 华能新能源股份有限公司 | Power curve characteristic detecting system for wind power generation units |
| CN106707166A (en) * | 2017-01-05 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Method for evaluating output characteristic of wind power plant |
| WO2017092297A1 (en) * | 2015-12-02 | 2017-06-08 | 中国电力科学研究院 | Method for evaluating power characteristics of wind turbines, apparatus and storage medium |
| CN110486225A (en) * | 2019-09-05 | 2019-11-22 | 国电联合动力技术有限公司 | The calculation method and device of Wind turbines power curve |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747367A (en) * | 2013-12-31 | 2015-07-01 | 华能新能源股份有限公司 | Power curve characteristic detecting system for wind power generation units |
| CN104747367B (en) * | 2013-12-31 | 2017-08-11 | 华能新能源股份有限公司 | Power curves of wind-driven generator sets Characteristics Detection system |
| WO2017092297A1 (en) * | 2015-12-02 | 2017-06-08 | 中国电力科学研究院 | Method for evaluating power characteristics of wind turbines, apparatus and storage medium |
| CN106707166A (en) * | 2017-01-05 | 2017-05-24 | 云南电网有限责任公司电力科学研究院 | Method for evaluating output characteristic of wind power plant |
| CN106707166B (en) * | 2017-01-05 | 2019-08-06 | 云南电网有限责任公司电力科学研究院 | A method for evaluating wind farm output characteristics |
| CN110486225A (en) * | 2019-09-05 | 2019-11-22 | 国电联合动力技术有限公司 | The calculation method and device of Wind turbines power curve |
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